Our Threaded Triplepoint Adapter Kit solves the problem. It's four maple corner blocks, each predrilled for our threaded footers, plus the four footers to go with the blocks. You simply glue a maple block to the inside of each box frame corner, flush with the bottom of the frame for invisibility. The blocks form a perfect mount for the footers while stiffening the box frame. Your turntable table will have a new musicality: thrilling dynamics, subterranean bass, shimmering treble clarity and harmonic detail.